Henry e



(No Model.)

H. E. SHAFFER.

AIR DISTRIBUTER FOR LAMPS. v No. 542,781. Patented July 16, 1896.

\ Q a 2L A f Attorney.

UNITED STATES PATENT OFFICE.

HENRY E. SHAFFER, OF ROCHESTER, NEW YORK, ASSIGNOR TO THE SHAFFER LAMP COMPANY, OF SAMEPLAGE.

AIR-DISTRIBUTER FOR LAM PS.-

SPECIFICATION ming part of Iietters Patent No. 542,781, dated July 16, 1895. Application filed J'uly 20 1894. Serial No. 518,117- (No model.)

To all whom it may concern:

Be it known that I, HENRY E. SHAFFER, of Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Air-Distributors for Lamps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the drawings accompanying this application.

My improvement relates to air-distributors for center-draft lamps, and is of that kind which has a closed top and perforated sides and fits in the open top of the wick-tube.

The invention consists in the construction and arrangement of parts hereinafter described, and embraced in the claim.

In the drawings, Figure 1 is a central vertical section of the top of the wick-tube and the burner, with the air-distributer in place.

Fig. 2 is a perspective View of the air-distributer. Fig. 3- isa central vertical section of the same.

The air-distributer consists of a cylinder at,

having an open bottom I) and closed top 0,

the latter being made of greater diameter than the body, thereby forming a flange c all around, which flange serves to stop the ascent of air under it and deflect the same outward into the blaze. The open end of the cylinder 0 fits closely into the open top of the wick-tube d, and its upper portion has perforations ff,

through which such air as passes up through the wick-tube escapes outward into the blaze.

g is a perforated disk extending across the cylinder near its lower end, and h is an inverted cone with its apex resting at the center of the disk and its base resting at the closed top of the cylinder. This cone may be perforated or not, as desired, but prefer- 0 ably it is unperforate'd, as its object is todivide the currents of air equallyat the bottom and gradually deflect them outward in a thin sheet, so as to be evenly and uniformly distributed to the flame. In the use of this device in a lamp the volume of air which passes up through the center of the Wick-tube first strikes the perforated disk g, where its force is broken and it is cut up into minute currents, which pass through into the cylinder. This perforated disk, by thus arresting the force of the air and cutting it up, prevents irregular puffs and drafts in the flame at all times, and thus secures uniformity of light. It also retards the passage of air and prevents an undue rush of the same through the cylinder in its cold state, holding the air within the cylinder so that it becomes thoroughly heated, thereby causing better combustion and producing a white and perfectly steady flame. At the same time it allows the air to be fed to the flame as fast as itcan be consumed. The air, after passing the disk, flows upward around the cone h and is deflected outward to the perforations in the cylinder in a thin sheet and without forming a dead space in the center. In passing through the perforations it comes in direct contact with the flame and is held against undue upward escape by the flange c, as before described.

In this invention it will be seen that the perforated disk 9 is'embodied directly in and forms a part of the air-distributing attachment, so that the whole forms an integral article which can be applied or removed at one action; and, furthermore, by so locating the perforated disk close up to the point where the air is discharged through the sides of the cylinder into the flame, a small chamber is made, in which the air is held in small volume and is readily heated, and a better effect is produced than where the perforated disk is located deep in the center-draft tube. Furthermore, in this invention the perforated disk g comes in contact with the bottom of the cone h, thus making a closed connection, preventing any passage of air under the cone, and thereby causing the currents of air that pass through the perforated disk to rise in a direct line on all sides to the point of dis- 9o charge into the flame.

Having described my invention, I do not claim, simply and broadly, a perforated cylinder with a central cone therein; nor do I claim, broadly, a perforated disk extending 5 across the air-tube.

What I claimas new, and desire to secure by Letters Patent, is Asa new article of manufacture, an air distributor for center-draft lamps, consisting I00 of the cylinder a perforated in its upper poly tion and adapted to fit closely in the air-tube of the lamp, the cone 71 starting from the upper edge of said cylinder and extending centrally downward nearly to the bottom of the cylinder, and the perforated disk g located wholly within the cylinder and abutting the lower end of the cone, forming a close connection therewith, the whole forming one in- 10 tegral body capable of being fitted to a lamp 1 at one operation, as shown and described and for the purpose specified.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

HENRY E. SIIAFFER.

Witnesses:

R. F. Oscoon, O. R. OSGOOD. 

